initial reaction
noun phraseUK /ɪˈnɪʃəl riˈækʃən/
US /ɪˈnɪʃəl riˈækʃən/
The first way you feel or act when something happens.
My initial reaction was to laugh, but then I felt bad.
OTHER MEANINGS
2. The first chemical or physical change that happens when substances meet.
The initial reaction between the two liquids produced heat.
3. The first response of a body or system to a stimulus or treatment.
The patient's initial reaction to the medicine was mild.
4. The first public response to a new idea, product, or event.
The initial reaction from critics was mostly positive.